A Ken Holt Mystery: The Riddle of the Stone Elephant. by Campbell, Bruce - 1949.

NY: Grosset & Dunlap Publishers, 1950. Very clean later printing, front flap on dust jacket lists to Mystery of the Invisible Enemy; Illustrated end papers; B&W frontispiece, very clean and tight textblock. Gently faded top edge; Tan cloth binding, minimally bumped at the spine extremities; Unclipped dust jacket with loss at the spine tips and lightly along the edges; Folds are creased, small chip on front bottom edge near foot of spine; 211p.. Later Printing. Cloth. Near Fine/Very Good (in mylar). 12mo - over 6¾" - 7¾" tall. Hardcover.

New York : Grosset and Dunlap , 1949 . First Edition . VG/G . 8VO . Number 2 in the series. Mattan & Davis Format 1. In brown cloth with jacket, pictorial endpapers. Lists to self on titles page and jacket flap. Hardy Boys to Crooked Arrow on rear cover, Rick Brant to Phantom Shark on rear flap. Light wear to book, owner's inscription on half-title. Jacket worn with losses at spine extremities.

NY: Grosset & Dunlap. Fine in Very Good+ dust jacket. 1953. First Edition. Hardcover. DJ is rubbed at the corners. This is the last title listed in the book. Last title on the back of the DJ is "The Crisscross shadow" also printed in 1953. ; 8vo 8" - 9" tall; 214 pages .